Comments and Ratings

Hi, I make on handwritten recognition project in my University, but I totally beginner...I use moments plus NN ...I need you help please... My email is pstahl@centrum.cz Thx

Hi Jorge,

Sorry but no, I don't have the code for regime switching time varying parameter model.

Regards.

 please send documentation my email id reach2satelliteyahoocom

Calculates the centroid of the entire image.

This is very useful piece of code. I am using it to extract the audio component from AVI files, the problem I am facing is that the extracted audio has a high degree of distortion, unlike the video which is much clearer. At this point, I need to have much better quality audio. Thanks once again for this utility, and please help if you can. Bests, Ravi

Excelent! I would like to combine TVP Models with Regime Switching as Kim y Nelson, have you any model like this?

Why not use OPeNDAP which has a tool to read NCEP Re-Analysis data (as well as many other datasets) directly into matlab?

http://opendap.org/download/ml-structs.html

This has SOME good features. What do I like about it? It does have help, to some extent. But the help could be a bit better. Here is what you get when you use help on this function:

>> help findit
  To obtain the position of either the maximum or minimum element in a vector
 
  INMAT specifies the input matrix
  Use OPT specify your choice of obtaining a maximum or minimum
  Set OPT=1 when trying to obtain the maximum
  Set OPT=2 when trying to obtain the minimum
 
 
  Oluwadamilola (Damie) Martins Ogunbiyi
  University of Maryland College Park
  Department of Electrical and Computer Engineering
  Communications and Signal Processing
  08-March-2010
  Copyright 2009-2010 Black Ace of Diamonds.

See that there is an H1 line in the help block. I like that. There is a simple description of the arguments. But what order do they go in? I might guess that INMAT is the first argument, because it is mentioned first. But there is no other hint.

Next, does this require that OPT be supplied? Is OPT and optional argument? If so, then it should have a default, and the help should tell us what is the default. As it turns out, there is no default value for opt.

I do like that there is a check for opt being a valid argument.

A good thing to do when you write help is to give an example of use. Show what SHOULD happen when you call your function on some simple test array, like magic(3).

Another good thing to put in your help is a see also line.

It does seem silly to me that when you type help for this code, it gives you more information about the author than it does about the function itself.

How about the code itself? Sadly, this part is TERRIBLE. Why in the name of god and little green apples did the author use nested loops to do this?

See that min and max would have given all the information the author needed, with a final call to ind2sub to get the actual subscripts of the result. Worse, the author actually calls min or max before the loop itself!!!!!!!!

My rating for this would have been about 3.5 stars before I got into the coding style itself. But solving the problem with nested loops is a ridiculous silly choice.

Thanks Lutz! Very handy piece of code.

My final year project is Face recognition using ICA. Can any one help me with it. I mean where to find the source codes and algorithms for ICA

Well, I suggest at this point to document this behaviour and to add in the see also line the HISTC.

Something like:
A(i) is member of the set S if the following condition is verified at least once:
k - tol <= A(i) < k + tol for k = S(1)...S(K)
 
Best

Hi Oleg,

This behavior is known (but not documented) due to the use of HISTC as you have correctly pointed out. User should never rely on the threshold tolerance in order to discriminate floats through exact comparison. Please enlarge the tolerance or add point to set member to work around.

Bruno

Rui, please email me directly with details of your problem and I will see if I can help.
Doug

A wholesome collection of Blocksets for Communication Engineers...

Dear Bruno,
I want to bring this case to your attention:

tf = ismemberf(2.8, 2.9, 'tol',.1) --> 1
tf = ismemberf(3, 2.9, 'tol',.1) --> 0

It's following histc behaviour on line 287 (lowB <= x < uppB), is this meant?

Regards
Oleg

Hi Jon, I am also having trouble reconstructing the signal back. I get a vector having all values NAN.

Thank you very much for this tool.

Is it possible to use this function on the horizontal axis ?
How do you think it should be difficult to add this ability to work in this case ? (Toogle mode vertical <--> horizontal)

Thank you again.

Great :)

Hi douglas!! i am currently doing a final year project on ear recognition.the idea of finding the feature vector to be trained involves finding the distances of a centroid from the intersection points(lines have been drawn at different angles to intersect a edge detected ear image)..but we are unable to find the coordinates of the intersections.hoping u can help us out asap

thanking u in anticipation
Rui

Hi!
The code has been useful so far,but when i use certain rgb images I get the following error:
??? Undefined function or variable "Threshold".

Error in ==> isodata at 68
level = (Threshold - 1) / (N(end) - 1);

do you know of a way i can resolve this? Many thanks.

I would also like to know how to use it with data in (x,y,z) format. Can you please tell me?

how can i use this file
i really need your help. Please...